The Westvleteren Brewery is a Belgian brewery founded in 1838 inside the Trappist Abbey of Saint Sixtus of Westvleteren, not far from Poperinge and Ypres.

The brewery and its beers are referred to as Westvleteren. The brewery's three beers have acquired an international reputation for taste and quality, the Sint-Sixtus WestVleteren 12 (Quadrupel) is been elected several times as "Best Beer in the World".LocationDonkerstraat 128640 WestvleterenBelgium